Nancy A. Melville July 20, 2023 New recommendations from the Joint British Thyroid Association/Society add to the increasingly general consensus that liothyronine (LT3) may be useful in combination with standard levothyroxine (LT4) in the treatment of hypothyroidism in some patients whose symptoms persist after standard treatment, despite a lack of evidence of benefit in clinical trials. “Most patients with primary hypothyroidism respond well to levothyroxine replacement...